What output is twice the sum of the input 3 and 4

Required output = 14

Step-by-step explanation:

Sum of the input 3 and 4 = 3 + 4

Twice the sum means two times.

So, to find twice the sum of the input 3 and 4, we need to multiply the sum by 2.

2(3 + 4)

Perform the addition inside the parentheses.

2(3 + 4) = 2(7)

Now, multiply.

2(3 + 4) = 14

Hence, required output = 14

A regular star is equilateral and has congruent angles at the vertices and congruent angles at each indentation. 
Equilateral means all sides are equal. The star is equiangular too since it has the same measure of angles. 

The number of lines of symmetry of the said regular star can be explained through the reflection symmetry, also known as Mirror symmetry whereby the star's half is the reflection of the other half of the same star.